Klaricid Tablet Side Effects in Pakistan

Klaricid Tablet (clarithromycin) side effects, from common stomach upsets and taste changes to rare serious warning signs, and when to see a doctor.

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-10-31 · Review date on file: 2026-10-31

A named review is not recorded for this page. Confirm medicine advice with your doctor or pharmacist.

Side Effects

Quick Answer

The most common side effects of Klaricid Tablet (clarithromycin) are nausea, diarrhoea, stomach pain, headache and a changed or metallic taste. Get urgent medical help for severe or bloody diarrhoea, a fast or irregular heartbeat or fainting, yellow skin or eyes, or a severe allergic reaction or blistering rash.

Side Effects at a Glance

Reported effects

Nausea
Diarrhea
Abdominal pain
Headache
Taste disturbance (metallic taste in the mouth)

Reactions needing medical advice

Severe allergic reaction, including severe skin reactions such as Stevens-Johnson syndrome
Heart rhythm problems (QT prolongation, torsades de pointes)
Severe or bloody diarrhoea (Clostridioides difficile colitis)
Liver problems, including jaundice and, very rarely, liver failure

When to See a Doctor Immediately

Severe stomach pain
Severe or bloody diarrhoea
Fainting, or a fast or irregular heartbeat
Chest pain
Yellow skin or eyes, or dark urine
Rash, blistering, or swelling of the face, lips or throat

Klaricid Tablet Side Effects (Nuksanat)

Klaricid Tablet (Clarithromycin) is generally safe when taken at the correct dose. However, like all medicines, it can cause side effects in some patients.

Common Side Effects (Aam Nuksanat)

Nausea
Diarrhea
Abdominal pain
Headache
Taste disturbance (metallic taste in the mouth)

These side effects are usually mild. If they continue, inform your doctor.

Serious Side Effects (Sanjeedah Nuksanat)

Severe allergic reaction, including severe skin reactions such as Stevens-Johnson syndrome — see a doctor immediately
Heart rhythm problems (QT prolongation, torsades de pointes) — see a doctor immediately
Severe or bloody diarrhoea (Clostridioides difficile colitis) — see a doctor immediately
Liver problems, including jaundice and, very rarely, liver failure — see a doctor immediately

When to See a Doctor (Kab Doctor Se Milna Zaroori Hai)

Severe stomach pain
Severe or bloody diarrhoea
Fainting, or a fast or irregular heartbeat
Chest pain
Yellow skin or eyes, or dark urine
Rash, blistering, or swelling of the face, lips or throat

Warnings and Precautions (Ihtiyat)

Avoid Klaricid if you are allergic to clarithromycin or other macrolide antibiotics.
Do not take Klaricid if you have a history of QT prolongation or serious heart rhythm problems (such as torsades de pointes), or low blood potassium or magnesium.
Do not take Klaricid with pimozide, cisapride, ergot medicines (such as ergotamine) or simvastatin. Colchicine must also be avoided in people with kidney or liver problems.
Individuals with liver dysfunction or jaundice related to past antibiotic use should be cautious.

Side Effects Summary Table

Type	Side Effect	Action
Common	Nausea	Monitor / inform doctor
Common	Diarrhea	Monitor / inform doctor
Common	Abdominal pain	Monitor / inform doctor
Common	Headache	Monitor / inform doctor
Common	Taste disturbance	Monitor / inform doctor
Serious	Severe allergic reaction	See a doctor immediately
Serious	Heart rhythm problems	See a doctor immediately
Serious	Severe or bloody diarrhoea	See a doctor immediately
Serious	Liver problems	See a doctor immediately

Reporting Side Effects

If you notice any unexpected side effect, report it on the DRAP pharmacovigilance portal: https://www.dra.gov.pk/pharmacovigilance

The information in this guide is for educational purposes only. If you notice any side effect, contact your doctor or pharmacist.

Frequently Asked Questions

What are the most common side effects of Klaricid Tablet?

The most commonly reported side effects of Klaricid Tablet include nausea and diarrhea. These are usually mild and go away on their own. Inform your doctor if they persist.

Can Klaricid Tablet cause allergic reactions?

Yes, like all medicines, Klaricid Tablet can cause allergic reactions in some people. Signs include rash, itching, swelling, or difficulty breathing. Stop use and seek medical help immediately if this happens.

Is Klaricid Tablet safe to take for a long time?

Klaricid is normally taken as a short course, usually 6 to 14 days. Any longer use should only be under medical supervision. Tell your doctor about diarrhoea, a changed heartbeat or yellow skin during treatment.

What should I do if I experience side effects from Klaricid Tablet?

For mild side effects, inform your pharmacist. For serious effects such as severe allergic reaction, stop the medicine and contact your doctor immediately or go to the nearest hospital.

Does Klaricid Tablet affect the liver or kidneys?

Clarithromycin can rarely cause liver problems, including jaundice; see a doctor straight away for yellow skin or eyes, dark urine or pale stools. In severe kidney impairment (creatinine clearance below 30 mL/min) the dose is halved and treatment should not go beyond 14 days.

Explore entries related to Klaricid Tablet by ingredient, class and listed uses. These links are not recommendations to switch treatment.

Same ingredient

Other entries for Clarithromycin. Form, strength and route can differ; ask a pharmacist before substituting.

Ingredient directory →

Other antibiotics

Sibling medicines in the Antibiotics class.

All in class →

Related by listed uses

Entries with overlapping stomach pain (abdominal pain) tags; they may address different diagnoses.

Stomach Pain (Abdominal Pain) hub →

Sources

DRAP Registered Product Data (Public Registry) — Drug Regulatory Authority of Pakistan
WHO Model List of Essential Medicines, 23rd ed. (2023) — World Health Organization
British National Formulary (BNF) — BMJ Group & Pharmaceutical Press
Klaricid 250 mg and 500 mg Tablets: Patient Information Leaflet — Drugs.com (UK leaflet)
Klaricid 250mg Tablets — Summary of Product Characteristics (MHRA) — Abbott Laboratories (via RxReasoner)

Medical disclaimer

This page is for educational use only and does not replace professional medical advice. Always confirm diagnosis, dose, and interactions with a qualified doctor or pharmacist before starting or changing any medicine.